Answer with explanation:
Equation of Linear Regression line is
y=1.14 x + 3.805
A line of regression is that line which passes through none of the points, few points or all the points in the two dimensional coordinate plane.It tells value of one variable when another variable is known.
for, x=30
y=1.14 × 30 +3.805
y=34.20 +3.805
y=38.005
y=38 (approx)
So, Ordered pair is , (30,38)
Option B
Answer:
9 years
Step-by-step explanation:
Let the present age = x
Age 6 years ago = x - 6
Thrice my age 6 years ago = 3*(x -6) =3x - 3*6 = 3x - 18
Twice my present age = 2 *x = 2x
Thrice my age 6 years ago be subtracted from
twice my present age = 2x - (3x - 18)
2x - (3x - 18) = x
2x - 3x + 18 = x
-x + 18 = x {Add x to both sides}
18 = x + x
18 = 2x {Divide both sides by 2}
18/2 = x
x = 9 years
Answer:
Step-by-step explanation:
n=4
∑ 4 + (n-1)4
n =1
Answer: $20 for each box
Step-by-step explanation:
So all you do is get the total of the cost and then divide it by how many he sold. So if im correct its 20.
Answer:
x is less than or equal to 16
Step-by-step explanation:
- 2 x x + 4 < 20
Isolate the variable
divide 2 from 2 = 0
x + 4 < 20
x is less than or equal to 16
